Alert archive / Maryland / Severe Thunderstorm Warnings in 2007
Severe Thunderstorm Warning 189, NWS Philadelphia/Mount Holly
NWS Philadelphia/Mount Holly issued this severe thunderstorm warning at Aug 16, 2007, 10:27 PM EDT for Caroline County, Maryland. It was in force for 48 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Aug 16, 2007, 10:27 PM EDT (02:27 UTC)
- Expired
- Aug 16, 2007, 11:15 PM EDT
- In force
- 48 min
- Issued by
- NWS Philadelphia/Mount Holly
- Area
- Counties, with a storm outline in the text
County Caroline County, MD
The radar
The Dover AFB radar (KDOX), 39 km from the middle of the area, began a volume at 02:29 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Wallops Is Stn, VA (KWAL), launched 00:00Z, 2.5 hours before the alert went out and 108 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 4766 J/kg
- Mixed-layer CIN
- -30 J/kg
- Mixed-layer LCL
- 852 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 175 m²/s²
- 0-3 km storm-relative helicity
- 289 m²/s²
- Significant tornado parameter
- 4.7
- Supercell composite
- 26.2
The text
As transmitted, in the capitals the NWS used until 2016.
000
WUUS51 KPHI 170228
SVRPHI
MDC011-170315-
/O.NEW.KPHI.SV.W.0189.070817T0227Z-070817T0315Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1027 PM EDT THU AUG 16 2007
THE NATIONAL WEATHER SERVICE IN MOUNT HOLLY NJ HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHERN CAROLINE COUNTY IN EASTERN MARYLAND...
* UNTIL 1115 PM EDT
* AT 1025 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING PENNY SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 7 MILES
SOUTHWEST OF DENTON...OR ABOUT 32 MILES SOUTHWEST OF DOVER...AND
MOVING SOUTHEAST AT 10 TO 15 MPH.
* THE SEVERE THUNDERSTORM WILL BE MOVING OVER...
RURAL SOUTHERN CAROLINE COUNTY THROUGH 11:15 PM EDT
IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...FREQUENT CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY LIGHTNING IS ONE OF NATURES NUMBER ONE KILLERS.
REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE
STRUCK BY LIGHTNING.
LAT...LON 3880 7594 3881 7591 3883 7591 3883 7593
3884 7593 3886 7594 3889 7594 3890 7574
3872 7572 3871 7594
TIME...MOT...LOC 0227Z 296DEG 11KT 3879 7586
$$
JRP1 follow-up statement
000
WWUS51 KPHI 170309
SVSPHI
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MOUNT HOLLY NJ
1108 PM EDT THU AUG 16 2007
MDC011-170318-
/O.EXP.KPHI.SV.W.0189.000000T0000Z-070817T0315Z/
CAROLINE MD-
1108 PM EDT THU AUG 16 2007
...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL CAROLINE COUNTY
EXPIRES AT 1115 PM EDT...
THE THUNDERSTORMS WERE WEAKENING AND WERE IN THE PROCESS OF EXITING
SOUTHEASTERN CAROLINE COUNTY.
HOWEVER, A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 600 AM
EDT FRIDAY MORNING FOR DELAWARE AND NORTHEASTERN MARYLAND.
LAT...LON 3880 7594 3881 7591 3883 7591 3883 7593
3884 7593 3886 7594 3889 7594 3890 7574
3872 7572 3871 7594
TIME...MOT...LOC 0308Z 296DEG 11KT 3873 7572
$$
JRPNearby
Severe Thunderstorm Warnings in Maryland, 2007Every severe thunderstorm warning in 2007
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.